1 files changed, 144 insertions, 0 deletions
diff --git a/lib/pleroma/web/admin_api/config.ex b/lib/pleroma/web/admin_api/config.ex
new file mode 100644
index 000000000..b7072f050
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+++ b/lib/pleroma/web/admin_api/config.ex
@@ -0,0 +1,144 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.Web.AdminAPI.Config do
+  use Ecto.Schema
+  import Ecto.Changeset
+  alias __MODULE__
+  alias Pleroma.Repo
+
+  @type t :: %__MODULE__{}
+
+  schema "config" do
+    field(:key, :string)
+    field(:value, :binary)
+
+    timestamps()
+  end
+
+  @spec get_by_key(String.t()) :: Config.t() | nil
+  def get_by_key(key), do: Repo.get_by(Config, key: key)
+
+  @spec changeset(Config.t(), map()) :: Changeset.t()
+  def changeset(config, params \\ %{}) do
+    config
+    |> cast(params, [:key, :value])
+    |> validate_required([:key, :value])
+    |> unique_constraint(:key)
+  end
+
+  @spec create(map()) :: {:ok, Config.t()} | {:error, Changeset.t()}
+  def create(%{key: key, value: value}) do
+    %Config{}
+    |> changeset(%{key: key, value: transform(value)})
+    |> Repo.insert()
+  end
+
+  @spec update(Config.t(), map()) :: {:ok, Config} | {:error, Changeset.t()}
+  def update(%Config{} = config, %{value: value}) do
+    config
+    |> change(value: transform(value))
+    |> Repo.update()
+  end
+
+  @spec update_or_create(map()) :: {:ok, Config.t()} | {:error, Changeset.t()}
+  def update_or_create(%{key: key} = params) do
+    with %Config{} = config <- Config.get_by_key(key) do
+      Config.update(config, params)
+    else
+      nil -> Config.create(params)
+    end
+  end
+
+  @spec delete(String.t()) :: {:ok, Config.t()} | {:error, Changeset.t()}
+  def delete(key) do
+    with %Config{} = config <- Config.get_by_key(key) do
+      Repo.delete(config)
+    else
+      nil -> {:error, "Config with key #{key} not found"}
+    end
+  end
+
+  @spec from_binary(binary()) :: term()
+  def from_binary(value), do: :erlang.binary_to_term(value)
+
+  @spec from_binary_to_map(binary()) :: any()
+  def from_binary_to_map(binary) do
+    from_binary(binary)
+    |> do_convert()
+  end
+
+  defp do_convert([{k, v}] = value) when is_list(value) and length(value) == 1,
+    do: %{k => do_convert(v)}
+
+  defp do_convert(values) when is_list(values), do: for(val <- values, do: do_convert(val))
+
+  defp do_convert({k, v} = value) when is_tuple(value),
+    do: %{k => do_convert(v)}
+
+  defp do_convert(value) when is_binary(value) or is_atom(value) or is_map(value),
+    do: value
+
+  @spec transform(any()) :: binary()
+  def transform(entity) when is_map(entity) do
+    tuples =
+      for {k, v} <- entity,
+          into: [],
+          do: {if(is_atom(k), do: k, else: String.to_atom(k)), do_transform(v)}
+
+    Enum.reject(tuples, fn {_k, v} -> is_nil(v) end)
+    |> Enum.sort()
+    |> :erlang.term_to_binary()
+  end
+
+  def transform(entity) when is_list(entity) do
+    list = Enum.map(entity, &do_transform(&1))
+    :erlang.term_to_binary(list)
+  end
+
+  def transform(entity), do: :erlang.term_to_binary(entity)
+
+  defp do_transform(%Regex{} = value) when is_map(value), do: value
+
+  defp do_transform(value) when is_map(value) do
+    values =
+      for {key, val} <- value,
+          into: [],
+          do: {String.to_atom(key), do_transform(val)}
+
+    Enum.sort(values)
+  end
+
+  defp do_transform(value) when is_list(value) do
+    Enum.map(value, &do_transform(&1))
+  end
+
+  defp do_transform(entity) when is_list(entity) and length(entity) == 1, do: hd(entity)
+
+  defp do_transform(value) when is_binary(value) do
+    value = String.trim(value)
+
+    case String.length(value) do
+      0 ->
+        nil
+
+      _ ->
+        cond do
+          String.starts_with?(value, "Pleroma") ->
+            String.to_existing_atom("Elixir." <> value)
+
+          String.starts_with?(value, ":") ->
+            String.replace(value, ":", "") |> String.to_existing_atom()
+
+          String.starts_with?(value, "i:") ->
+            String.replace(value, "i:", "") |> String.to_integer()
+
+          true ->
+            value
+        end
+    end
+  end
+
+  defp do_transform(value), do: value
+end